Nora O'Byrne, MD
Endocrinology, Diabetes & Metabolism Physician · Merrionette Park, IL
Nora O'Byrne, MD is an endocrinology, diabetes & metabolism physician with a practice address in Merrionette Park, Illinois, and NPI 1073909826, issued on Apr 8, 2015. Check the license (Illinois 036.149389, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Nora O'Byrne
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 036.149389 IL
125066904 IL
Self-reported in NPPES; status is on the state search - Practice location
- 11600 S Kedzie Ave Ste D, Merrionette Park, IL 60803
- Phone
- (708) 684-6867
- Enumerated
- Apr 8, 2015
- Record last updated
- Aug 15, 2022
- Medicare enrollment
- Enrolled (PECOS I20220106000940); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Also registered at 11600 S Kedzie Ave Ste D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angela Pauline Calimag, MDEndocrinology, Diabetes & Metabolism Physician1225597206
- Joumana Chaiban, MDEndocrinology, Diabetes & Metabolism Physician1124233291
- Diksha KaulEndocrinology, Diabetes & Metabolism Physician1649945346
- Ayesha Khan, MDEndocrinology, Diabetes & Metabolism Physician1043908551
- Alyssia Morley, DOEndocrinology, Diabetes & Metabolism Physician1184364986
- Michele Obeid, MDEndocrinology, Diabetes & Metabolism Physician1609360734
Verify Nora O'Byrne in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.149389Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,095 Medicare Part D claims for 287 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Lantus Solostar156 claims
- Ozempic133 claims
- Levothyroxine Sodium126 claims
- Atorvastatin Calcium116 claims
- Metformin Hcl104 claims
- Trulicity69 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $123.02
1 payment: food and beverage; the largest payer was Averitas Pharma Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Advocate Health And Hospitals CorporationMerrionette Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nora O'Byrne among 436 endocrinology, diabetes & metabolism physician records in Illinois
Nora O'Byrne, MD is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 2006 among the 295 with a school on file
- Record last updated2022 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 endocrinology, diabetes & metabolism physician records list a practice address in Merrionette Park
They are 9 of the 106 NPPES records with a practice address in Merrionette Park, and 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Merrionette Park → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Angela Pauline Calimag, MDMerrionette Park, IL 608031225597206
- Joumana Chaiban, MDMerrionette Park, IL 608031124233291
- Erin Drever, MDMerrionette Park, IL 608031750631727
- Diksha KaulMerrionette Park, IL 608031649945346
- Ayesha Khan, MDMerrionette Park, IL 608031043908551
- Alyssia Morley, DOMerrionette Park, IL 608031184364986
- Michele Obeid, MDMerrionette Park, IL 608031609360734
- Ula TarabichiMerrionette Park, IL 608031316398936
Common questions
What is Nora O'Byrne, MD's NPI number?
Nora O'Byrne, MD's National Provider Identifier (NPI) is 1073909826, issued on Apr 8, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nora O'Byrne, MD located?
The NPPES record lists a practice address at 11600 S Kedzie Ave Ste D, Merrionette Park, IL, 60803. Phone: (708) 684-6867. Providers update this record themselves, so call before visiting.
How can I verify Nora O'Byrne, MD's license?
NPPES lists Illinois license number 036.149389, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nora O'Byrne, MD prescribe under Medicare Part D?
In 2024, Nora O'Byrne, MD had 2,095 Medicare Part D claims for 287 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.